the faa is required to cut $637 million from its budget by the end of september. >>> and at least another inch of rain is expected today in parts of an already flood-ravaged midwest. at least six rivers in northern illinois have surged to record levels and thousands of residents have been displaced. the governor declared 44 counties disaster areas. missouri's governor has also declared a state of emergency. >>> and some momentary shock today after this a.p. tweet was posted, claiming, quote, two explosions in the white house and barack obama is injured. it turns out that the a.p. account was hacked and the erroneous tweet was taken down minutes later. the dow plunged more than 100 points on the news but quickly regained the losses once it was deemed false. a group known as the syrian electronic army has claimed responsibility for this tweet. an fbi spokesperson tells cnn the fbi is now investigating that hack. wolf? >> lisa sylvester, thanks very >> lisa sylvester, thanks very much. -- captions by vitac -- www.vitac.com >>> new images of the shootout between tsarnaev, the two brothers, an